Which has the higher melting point: Saline (SiH4) or phosphine (PH3)? Explain why. Include the correct structure of each molecule.
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Which has the higher melting point: Saline (SiH4) or phosphine (PH3)? Explain why. Include the correct...
which of the following would you expect to have a higher melting point? explain why 3. Which of the following would you expect to have the higher melting point? Explain why. (3 marks - 1 for the answer, 2 for the explanation) CI OH
8. a. Explain why the melting point of pure phthalic acid is higher than that of pure napthalene, when the two compounds have nearly the same molecular weight. b. Explain why the melting point of pure hexane is hgiher than that of pure cyclo-hexane, when the two compounds have nearly the same molecular weight. (Hint: reffer to structures)
What has a higher melting point 4-nitrobenzaldehyde in methanol or 4-nitrobenzyl alcohol? And why? TLC Ochem 1
Which of the following statements is false about NH3 and PH3 ? Your answer: O NH3 molecules are polar. O Dipole-dipole forces and dispersion forces exist between PH3 molecules. o (N) atom makes sp3 hybridization in NH3 molecule. O PH3 molecule has trigonal pyramidal geometry. O Normal boiling point of PH3 is higher than that of NH3.
Which has the stronger bond, the H-C bond in CH4or the H-Si bond in SiH4 ? Explain your answer based on a Lewis structure.
3. Which one of each of the following pairs will have the higher melting point? Briefly explain your reasoning in each case to receive full credit. (Each question worth 2 points) (a) NaCl or Nal (b) NaCl or KCI
which solid has the highest melting point, why? Ar(s), CCl4(s), LiCl(s), CH3OH(s) Which solid in each pair has the higher melti g point and why? Fe(s) or CCl4(s) KCl(s) or HCl(s) Ti(s) or Ne(s) H2O(s) or H2S(s)
Which of the following woud you expect to have a higher boiling point? Why? 1. CH4 or HF 2. CH3OCH3 CH3CH2OH 3. CH4 of C2H6 4. CH4 or SiH4
Propose a chloride salt with chemical formula XCI that has a higher melting point than any of these. In a sentence or two, explain your choice. Propose a rubidium salt with chemical formula RbX that has a lower melting point than any of these. In a sentence or two, explain your choice.
NH2 ~ NH2 14. Which has higher melting point? ( ) 15. Which can be protonated with the 1st H more easily? ( ) NH2 "NH2 16. Rank their leaving group ability of from low to high. (A) OH (B) NH2 (C) F (D) Br